Fountain pen



MW 7 1929- F. J. KRlsToFi-:K 1,712,304

FOUNTAIN PEN Filed Aug. l1, l:1.924: v

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INKENToR' Patented May 7, 1929.

UNITED STATES PATENT orrleii.A

:FRANK J. KnIsfrornK, OF sfr. PAUL, Minnesota, nssieivon'ro BROWN a BienLoW or sfr. PAUL, MrnnresorA, A consonantes or Minnesota.

FOUNTAIN PEN.'

Application filed August 11,

means which can be readily inserted 0r removed from the fountain pen barrel.

i feature of the invention resides inmeans connected together to provide a unit includs ing a level' operated sack depressing means which is fully assembled before it is inserted into the pen barrel. This unit telescopes into the pen barrel in a manner so as to hold it rigidly in place for operation. i When the lever is operated the ink sack is collapsed forcing air or inl; out of the same and when the lever is released the vacuum in the sack will fill it with. inli when the pen is inserted in an ink well. v

rlhe invention also further provides an eX- tremely simpl-e construction which makes np the sach operating unit whereinthe unit is provided with a cylindrical supportingr member having spring gripping ends, of a cylindrical shape, which are adapted to engage the inner wall of the pen barrel to hold the unit in operating position. The simplicity of the unit construction also resides in the use of a flat spring member which is adapted to operate to raise the depressing` bar and operating lever into inoperative position away from the inlr sach. l'leretofore various springs havebeen used and all of these havel been more or less of a complicated nature owing to the fact that they provide a curved or looped end on the Spring which in opera-V tion of the lever is inclined to crack at the curve, thus making the spring ineffective and subject to severe strain in the operation of the filling lever. ln my pen the fiat straight na ture of the spring permits it to move with the depressing bar and operating lever and yet provides a spring of suflicient resistance, so as to raise the Operating'bar from depressed position when the operating lever is moved into parallel relation with the barrel.

Heretofore the pivoting of the Operating nis-anbei' has been a `considerable problem in the endeavor to make asimple mechanism for Operating the fick and it has not been easy to conceal the pinlle for the operating lever so that it would Igive a neat and finished appear ance to the pen. In Amy invention I haveV provided a unit construction `with a pintle which is entirely concealed from the outside 1924. Serial No. 731,425.

when the unit inserted inthe barrel and the barrel assists in holding the pintle in opera ative position by engaging the ends of the same. This provides construction which is easily assembled and which can be readily removed from the barrel so that the unit can be entirely replaced or repaired if it is desired. These features of my'invention are all of marked importance, owing to the fact that my unit operating means is designed to be used `particularly with fountain pen barrels made of goldysilver or other precious metal so that even if the sack Operating unit be comes ineffective for any reason whatsoever it cany be removed from the barrel and a new one inserted if it is desired.

Further the unit provides a larger openin g for the sack and is easily inserted or removed from the barrel so that a large ink sack can be used in my fountain pen.

In the drawings forming a part of my specification A Figure 1 is a view of my fountain pen including my operating unit contained therein.

figure 2 illustrates a portion of the fountain pen barrel showing my unit partially inserted in the open end of the same.

Figure 3 a cross sectional central view illustrating a portion of the barrel and showing my sack operating unit fixed therein.

Figure 4 isa section on the line awel of F ig- `ure 3.

y Figure 5 isha perspective view of my sack operating unitremoved from the fountain pen barrel. l

figure bis a detail of a portion ofthe barrelandunit showing an alternative eon` struct-ion. y

In the drawings A representsmy fountain pen sack operating unit which is formed with a body portion l() having cylindricalshaped spring ends 11 and 12 which are adapted to engage :within the fountain pen easing 13 in a manner so as to hold the unit A in operative position in the fountain pen barrel,

The unit A is provided with an operating lever 141 which is pivotallyheld to the body 1 0 bythe pintle 15 between the lugs 1G which are formed in the body by depressing and shaping the same in a manner so that the lugs will not project above the circumference of the body portion 10 of the unit A. i

The pin' or pintle 15 extends through the lugs 16 and the depending side walls 17 of the lever Mein a manner so that when the unit A. is

Y trated in Figure 6. 1When itis desired to re-' 'inserted into vthe barrel 13 the ends of the pin will-approximately engage with the inner surface of the barrelv 13 and which forms a stop for either end of the pin or pintle A15 to hold itin operating position.

YThis construction permits a pint-le of a rod like nature to be used without a shoulder on vthe end if itis desired. c can be shouldered on its ends if 1t is inserted Qbviously the pin in operating position as is illustrated in Figure y The operating lever 141s provided with an engaging end 18 which rests in the depression 19 formed in the casing 13 of' the vfountain pen barrel. W'hen in inoperative position, the end 1 9 of the lever 14 assumes the position illustrated in-Figure 3. lhen the unit A is Vforced into the'barrel or casing 13 as illusy trate'd'in Figure `2 the lever follows up onto 2'0" thevpo'rtion 19 owingV to its thin flat nature causing it to raise up by reason of thelongitudinally extending slot 20 formed in the casf ing 13 and into position in the depressed poredge 22'of the body lOvof the unit A in a manner so as to form a shoulder to hold the unit Ain liXed position in the barrel 13, as illusmove the unit when this shoulder 21 is used,

-it Ais bent upward to release the unit A whereupon by engaging it with a suitable instrument it can be readily'removed. The shoulder 21 is not necessary to hold theunit A in the barrel l13 where the spring ends 11 and 12 grip the barrel` sutliciently to hold the unit A in place inthe barrel and the unit will operate without this shoulder in the same effective manner. The shoulder only being necessary where the unit V1s made of a nature so as not to' grip vthe inner surface of the case 13 with a large degree of friction.

f The body of the cylinder 10 is cut away at 24-eentrally' between the ends Aso that the d gripping aws 11 and 12 operate more readily to engage and hold the ends of the cylinder 10 in rigid position in the case 13 of the pen.k

The Vhollow nature ofthe cylinder 10 of the unit Afissuch as to permit a very large ink sack to be passed through'the same when it is kheld in the fountain pen casing thus permitting a larger quantity ofl ink to be stored in rtheink sack B; `In the 'drawing applicant has exaggerated the sizes even more than they naturally would be because it 1s necessary to -dothis lto make 'a KVclear showing. of the parts but in reality the mechanism of the unit A l is quite small,A which leaves a very large opening `through thesame. "Iv-The unit Anis irovided with a channel shaped sack depressor bar 25 which is held to theeyli'ndor' 10 by the flat spring 26 which is attached on onel end at 27 by the portion of the cylinder 10 which is cut out to torni the open` ing 28 so as to permit the end 2T of' the spring to pass between a portion of the cylinder formed by cutting and depressing' the por` tio'n out ot the portion 2S. The other end olI the spring 2G secured at 25) by the ears Clo formed on each side of the depress-or har 25. These ears 30 are bent inwardly to tirmly grip the end 29 ot the fiat spring 2t?.

The formation of the flat spring 26 is perfectly flat in its natural state and when it is secured at its ends 27 and 2f) it is caused to extend at an angle so that the natural tendency of the spring is to raise and draw the depressor bar 25 up against the side walls 1T of the operating lever 1l and in this manner the tlat spring 26 draws the depressor bar 2T away from the sack B allowing the same to expand and by vacuum till itself with ink when it is operated. The fiat straight' nature of the spring 26 permits a strong acting spring to be used which occupies only a small amount of space in the unit construction A.

It is a very inuiortant feature of the invention to provide the unit operating assembly A which is ot a simple inexpensive construction and wherein the straight flat spring member 26 is employed to operate the depressor bar. The operation of the lever 14 moves the lever downward against the sack ll as is illust rated in dotted outline in Figure 3 and the curved forward end 31 of the depressor bar 25 engages against thc end of the sack 'B which is scoured to the pen sh ank in the ordinary manner. The engagement of the end 31 against the comparatively stiff end of the sack ll. owing to its connection with the pen shank, causes the rear end 32 to move downwardly approximately parallel with the ink sack body B so as to equally depress the sack. The ease of assembling the operating unit A before it is inserted into tht` barrel is apparent and by reason of the fact. that the same is easily positioned within the casing 13 or removed frein the same it is evident that the construction is of such importance as to provide a simple, practical and very desirable unit for fountain pens of the nature described.

The operating lever 14 is held by the pintle 15 between the lugs 1G and is provided with a squared end 34 which engages a gainst, the depressor bar 25 in a flat manner so that the squared end forms a flat like shoulder which holds the lever 14 in an upright position rigidly, to hold the depressor bar 25 pressed tightly against the sack B as is illustrated in dotted outline in Figure 3.

The lover 14 is provided with edges 15 formed on the lower ends of the depending `side walls 17 which extend approximately al right angles to the shoulder squared end 34. The yedges 35 are adapted to engage, flat against the bar 25, as illustrated 1n Figure 3,

ltltl when the operating lever llt is in inoperative position and when the depressor bar is held against the edges by the spring 26. ln this manner the edges 35 'form a flat shcuider engagement which holds the lever bar under the tension of the spring 2G out of operating position.

ln accordance `with the patent statutes I have described the principles of operation of my invention and have illustrated in the drawings a single construction which l desire to have it understood is only :illustrative and that the invention can be applied to uses other than 'those above set forth and carried out by other means within the scope of the following claims.

eiaim:

i. fr fomitain pen sach operating unit includii a cylindrical body portion, an operating ever pivoted thereto, a sack depressor bar extending through said cylindrical body and fiat straight Wiring means connecting said depressor bar with saidbody inv a manner te permit the same to be operated by said oilierating niember to compress the inl( sach in a fountain pen.

f2. A fountain pea sacl; operating unit reniovably positioned within the fountain pen barrel including, an operating lever pivoied to said unit, a sach depressor bar disposed beow saiihopcrating lever, a fiat spring connected to said bar, o lierable with said lever to hold the le vcr adj arent to the bar and means for collect ivcly lmlding said bar, spring, and

operatins` lever together in a manner to be easily inserted or removed from the fountain pen barrel.

ifi. it unit fountain pen operating n'ieans compr'" g, a cyiiinirical portion having .-:pring g ipping ai ys finfmed on the end thereof, an operating lever pivotally connected tc said cylindrical portion, a saclr depressing bar extending through said cylindrical portion and spring means extending,approximately straight from end to end and acl a}'itcd te connect-said cylindrical portion and depressoi.' bar in a nirinncr so that said depressor bar is held under spring tension against said operating; lever at all times.

fi- .n fountain pen sach operating unit, inclnding elongated cylindrical means adapted to .hold an operating lever, a depressor bar and spring connecting means together to ferm a removable unit in a fountain pen barrel.

e. it. fountain pen having a barrel, an operating unit providing a member adapted to frictioiially engage said barrel in a manner to hold the unit removable within said barrel so that when the same lis removed said barrel is entirelyV operable in or out of said barrel. p t. .it fountain pen having a barrel, a longi- 'tudinai slot formed in said barrel, a remova# empty, said operating un it being ble saclr operating unit held frictionally within said barrel in a manner to permit said unit to be operable in said barrel and operable out of said barrel whereby the unit may be inserted or removed from said barrel in a collective state.

'i'. A fountain pen sack depressor unit removably held in the fountain pen barrel including a cylindrical member, a longitudinal slot formed in said member, an operating lever, parallel side Walls formed integral with said cylindrical member, adjacent the edge of said slot between and to which said operating lever is pivotally secured in a inanncr whereby the pintlc of the pivot will cngage the walls of the fountain pen barrel when the unit is inserted therein, a fiat, approxin'iately straight spring member secured on one end to said cylindrical member, a depressor bar extending thereto, said cylindrical member rigidly secured to the other end ot said spring member beneath said operating lever in a manner to hold said deprcssor bar under spring tension against said operating lever. i

t3. A fountain `pen sach operating unit including a cylindrical meinber'having spring 'jaws formed on the end thereof, a longitudinal slot :termed in said member, outwardly in'oliecting side Walls formed in the opposite edges of said slot, an operating lever pivotally secured to said walls, a channel. shaped depressoi.' bar and an approximately straight. fiat spring member adapted to hold said depressor bar under spring tension against said operating lever and connected to said cylindrical mcmberwhereby said depressor bar will be caused to follow into engagement at one end of said operating lever and to lie in ilose proximity thereto, to withdraw the saine from depressing position upon lthe ink sach of the fountain pen.

i 9. A. unit fountain pen sack operating means includino` a cylindrical. member, spring gripping 'jaws 'orincd on the end thereof and approniniately circular in cross sectional shape, a channel shaped depressor bar extendw ,ing .into said cylindrical member, a spring member extending approximately st "aight and of a flat nature through its length, means for seci'niiig one end of said spring to said circular member and the other end to said dcpressor bar, a slot superimposed in said circular member to said depressor bar, and an operating lever pivotally positioned wit-hin said slot in a manner to cause one end thereof to engage against said depressor bar :in a manner to move the same into operating position, said spring member withdrawing said deprcssor bar cut of operatiiig position and pressing against: said operating lever under spring tension to hold the same in inoperati ve position.

FRANK J. KRTSTOFEK. 

